Path Traversal in Ghost
CVE-2023-40028
Ghost is an open source content management system. Versions prior to 5.59.1 are subject to a vulnerability which allows authenticated users to upload files that are symlinks. This can be exploited to perform an arbitrary file read of any file on the host operating system. Site administrators can check for exploitation of this issue by looking for unknown symlinks within Ghost's `content/` folder. Version 5.59.1 contains a fix for this issue. All users are advised to upgrade. There are no known workarounds for this vulnerability.
Vulnerability class: Path Traversal (Directory Traversal)
EPSS: 0.687 (99.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Ghost
- Tryghost Ghost — versions < 5.59.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2023-40028?
- CVE-2023-40028 is a medium-severity vulnerability in Ghost, classified under Path Traversal. CVSS score: 4.9/10. Published 2023-08-15.
- How severe is CVE-2023-40028?
- Medium severity. CVSS v3 base score is 4.9 out of 10.
- Is CVE-2023-40028 known to be exploited?
- 19 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.